I agree that it can be a chore, but more like, I'll use a real computer for serious tasks like doing my taxes, administration, planning vacations, etc.
This is still the case for non-techie Millennials and older. But for the younger generations who might have grown up with a smartphone as their only personal device, the distinction of task importance determining the platform has disappeared.
Is it just the younger generation? I’ve seen all generations favour their phone over a laptop for anything that needs to be done online. Which is basically everything.
Everyone is gravitating to the phone, but habit is an enduring force. Some people will always use a computer for specific tasks as they learned for the rest of their life. I think most of us are in that camp.